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Finding the Fourth Proportional to 86,216,002.50, 118,978,083.45 and 58,761,891.66

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Solution

The fourth proportional to 86,216,002.50, 118,978,083.45 and 58,761,891.66 is: 81,091,410.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,216,002.50 : 118,978,083.45 = 58,761,891.66 : x
  2. Step 2: Convert to fraction form
    86,216,002.50/118,978,083.45 = 58,761,891.66/x
  3. Step 3: Cross multiply
    86,216,002.50x = 118,978,083.45 × 58,761,891.66
  4. Step 4: Simplify right side
    86,216,002.50x = 6,991,377,249,603,339
  5. Step 5: Solve for x
    x = 6,991,377,249,603,339/86,216,002.50
  6. Step 6: Final answer
    x = 81,091,410.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.